Tutorial by Examples: b

Parameters The first 4 parameters are passed in (in order) RCX, RDX, R8 and R9. XMM0 to XMM3 are used to pass floating point parameters. Any further parameters are passed on the stack. Parameters larger than 64bit are passed by address. Spill Space Even if the function uses less than 4 paramet...

The var_dump function allows you to dump the contents of a variable (type and value) for debugging. Example: $array = [3.7, "string", 10, ["hello" => "world"], false, new DateTime()]; var_dump($array); Output: array(6) { [0]=> float(3.7) [1]=> ...

C99 Added in the C standard version C99, _Bool is also a native C data type. It is capable of holding the values 0 (for false) and 1 (for true). #include <stdio.h> int main(void) { _Bool x = 1; _Bool y = 0; if(x) /* Equivalent to if (x == 1) */ { puts("T...

You can use gradle to have BuildConfig constants and res values on a per flavor basis. Just add the value to the flavor you want to support. android { defaultConfig { resValue "string", "app_name", "Full App" buildConfigField "boolean",...

#include <stdio.h> int main(void) { /* define a small bit-field that can hold values from 0 .. 7 */ struct { unsigned int uint3: 3; } small; /* extract the right 3 bits from a value */ unsigned int value = 255 - 2; /* Binary 11111101 */ small.u...

The beforeFilter() method executes before any other method executes in the controller. First use the Event namespace before defining the class in your controller file. use Cake\Event\Event; In your controller, add the beforeFilter() method as shown below. public function beforeFilter(Event $ev...

Pass each variable to view at a time $this->set('color', 'pink'); $this->set('color', $color); Pass multiple variables to view together via compact() function $color1 = 'pink'; $color2 = 'red'; $this->set(compact('color1', 'color2'));

The format of a playbook is quite straightforward, but strict in terms of spacing and layout. A playbook consists of plays. A play is a combination of targets hosts and the tasks we want to apply on these hosts, so a drawing of a playbook is this: To execute this playbook, we simply run: ansible...

You can use the adb backup command to backup your device. adb backup [-f <file>] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all] [-system|nosystem] [<packages...>] -f <filename> specify filename default: creates backup.ab in the current directory -apk|noapk...

TabLayout provides a horizontal layout to display tabs, and is commonly used in conjunction with a ViewPager. Make sure the following dependency is added to your app's build.gradle file under dependencies: compile 'com.android.support:design:25.3.1' Now you can add items to a TabLayout in your ...

The Firebase Realtime Database allows ordering and querying data. For small data sizes, the database supports ad hoc querying, so indexes are generally not required during development. Before launching your app though, it is important to specify indexes for any queries you have to ensure they contin...

$ mkdir 20{09..11}-{01..12} Entering the ls command will show that the following directories were created: 2009-01 2009-04 2009-07 2009-10 2010-01 2010-04 2010-07 2010-10 2011-01 2011-04 2011-07 2011-10 2009-02 2009-05 2009-08 2009-11 2010-02 2010-05 2010-08 2010-11 2011-02 2011-05 2011-08 2011...

$ cp .vimrc{,.bak} This expands into the command cp .vimrc .vimrc.bak.

// Include the MFC header: // (you do not need to and should not include the standard Windows headers, e.g. // Windows.h) #include <AfxWin.h> // MFC core and standard components // The following header defines resource constants, such as dialog and control IDs: #include &qu...

Just define: // These rules give anyone, even people who are not users of your app, // read and write access to your database { "rules": { ".read": true, ".write": true } } It can be useful during development but pay attention because This level o...

You can define a private rules to disable read and write access to your database by users. With these rules, you can only access the database when you have administrative privileges (which you can get by accessing the database through the Firebase console or by signing in from a server). // These...

An indeterminate ProgressBar shows a cyclic animation without an indication of progress. Basic indeterminate ProgressBar (spinning wheel) <ProgressBar android:id="@+id/progressBar" android:indeterminate="true" android:layout_width="wrap_content" ...

A determinate ProgressBar shows the current progress towards a specific maximum value. Horizontal determinate ProgressBar <ProgressBar android:id="@+id/progressBar" android:indeterminate="false" android:layout_width="match_parent" android:layout...

If you have one of the supported Linux distributions, you can follow the steps on the .NET Core website: https://www.microsoft.com/net If you have an unsupported distribution: Download the .NET Core SDK from the links, picking the distribution closer to the used one. https://www.microsoft.com/net...

Grant Vibration Permission before you start implement code, you have to add permission in android manifest : <uses-permission android:name="android.permission.VIBRATE"/> Import Vibration Library import android.os.Vibrator; Get instance of Vibrator from Context Vibrator vibr...